MPP Solar LV 6548 User Manual
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MPP Solar LV 6548 User Manual

Solar inverter / charger
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User Manual
LV 6548
SOLAR INVERTER / CHARGER
Version: 1.0

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Summary of Contents for MPP Solar LV 6548

  • Page 1 User Manual LV 6548 SOLAR INVERTER / CHARGER Version: 1.0...

  • Page 2: Table Of Contents

    Table of Contents ABOUT THIS MANUAL ............................1 Purpose ................................1 Scope ................................1 SAFETY INSTRUCTIONS ........................... 1 INTRODUCTION ..............................2 Features ................................2 Basic System Architecture ..........................2 Product Overview ............................. 3 INSTALLATION ..............................4 Unpacking and Inspection..........................4 Preparation ..............................

  • Page 3: About This Manual

    ABOUT THIS MANUAL Purpose This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read this manual carefully before installations and operations. Keep this manual for future reference. Scope This manual provides safety and installation guidelines as well as information on tools and wiring. SAFETY INSTRUCTIONS WARNING: This chapter contains important safety and operating instructions.

  • Page 4: Introduction

    INTRODUCTION This is a multi-function inverter, combining functions of inverter, solar charger and battery charger to offer uninterruptible power support in a single package. The comprehensive LCD display offers user-configurable and easy-accessible button operations such as battery charging current, AC or solar charging priority, and acceptable input voltage based on different applications.

  • Page 5: Product Overview

    Product Overview Appendix I. NOTE: For parallel installation and operation, please check LCD display 12. Current sharing port Status indicator 13. Parallel communication port Charging indicator 14. Dry contact Fault indicator 15. USB port as USB communication port and USB function port Function buttons 16.

  • Page 6: Installation

    INSTALLATION Unpacking and Inspection Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should have received the following items inside of package: Inverter unit Manual software CD RS-232 cable Parallel communication cable Current sharing cable DC Fuse Cable gland x 4 pcs PV connectors (2 sets)

  • Page 7: Battery Connection

    Wire Size Dimensions Amperage capacity value D (mm) L (mm) LV 6548 153A 250AH 1*2/0AWG 5 Nm Please follow below steps to implement battery connection: 1. Assemble battery ring terminal based on recommended battery cable and terminal size. 2. Fix two cable glands into positive and negative terminals.

  • Page 8: Ac Input/Output Connection

    Suggested cable requirement for AC wires Model Gauge Torque Value LV 6548 4 AWG 1.4~ 1.6Nm Please follow below steps to implement AC input/output connection: 1. Before making AC input/output connection, be sure to open DC protector or disconnector first.

  • Page 9: Pv Connection

    6. Make sure the wires are securely connected. CAUTION: Important Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause utility short-circuited when these inverters are worked in parallel operation. CAUTION: Appliances such as air conditioner requires at least 2~3 minutes to restart because it’s required to have enough time to balance refrigerant gas inside of circuits.
  • Page 10 Prepare the cable and follow the connector assembly process: Strip one cable 8 mm on both end sides and be careful NOT to nick conductors. Insert striped cable into female terminal and crimp female terminal as shown below. Insert assembled cable into female connector housing as shown below. Insert striped cable into male terminal and crimp male terminal as shown below.

  • Page 11: Final Assembly

    1. Open circuit Voltage (Voc) of PV modules not to exceed maximum PV array open circuit voltage of the inverter. 2. Open circuit Voltage (Voc) of PV modules should be higher than the start-up voltage. LV 6548 INVERTER MODEL 8000W Max.

  • Page 12: Remote Display Panel Installation

    Remote Display Panel Installation The LCD module can be removable and installed in a remote location with an optional communication cable. Please take the follow steps to implement this remote panel installation. Step 1. Remove the screw on the bottom of LCD module and pull down the module from the case. Detach the cable from the original communication port.

  • Page 13: Communication Connection

    RS-232 communication Remote communication to PC USB communication to BMS communication Communication Connection Serial Connection Please use the supplied serial cable to connect between the inverter and your PC. Install the monitoring software from the bundled CD and follow the on-screen instructions to complete your installation. For detailed software operation, refer to the software user manual on the bundled CD.

  • Page 14: Dry Contact Signal

    Dry Contact Signal There is one dry contact (3A/250VAC) available on the rear panel. It could be used to deliver signal to external device when battery voltage reaches warning level. Unit Status Condition Dry contact port: NC & C NO & C Power Off Unit is off and no output is powered.

  • Page 15: Operation

    OPERATION Power ON/OFF Once the unit has been properly installed and the batteries are connected well, simply press On/Off switch (located on the display panel) to turn on the unit. Inverter Turn-on After this inverter is turned on, WELCOME light show will be started with RGB LED BAR. It will slowly cycle through entire spectrum of nine colors (Green, Sky blue, Royal blue, Violet, Pink, Red, Honey, Yellow, Lime yellow) about 10-15 seconds.

  • Page 16: Lcd Display Icons

    Solid On Battery is fully charged Green Flashing Battery is charging. Solid On Fault mode Flashing Warning mode Function Keys Function Key Description Exit the setting USB function setting Select USB OTG functions Timer setting for the Output source Setup the timer for prioritizing the output source priority Timer setting for the Charger source Setup the timer for prioritizing the charger source...
  • Page 17 Battery Information Indicates battery level by 0-24%, 25-49%, 50-74% and 75-100% in battery mode and charging status in line mode. When battery is charging, it will present battery charging status. Status Battery voltage LCD Display <2V/cell 4 bars will flash in turns. Bottom bar will be on and the other three bars Constant 2 ~ 2.083V/cell...

  • Page 18: Lcd Setting

    LCD Setting General Setting ” After pressing and holding “ button for 3 seconds, the unit will enter the Setup Mode. Press “ ” or “ ” button to select setting programs. Press “ ” button to confirm you selection or “ ”...
  • Page 19 60A (default) Appliances (default) If selected, acceptable AC input voltage range will be within 90-280VAC. AC input voltage range If selected, acceptable AC input voltage range will be within 170-280VAC. AGM (default) Flooded User-Defined If “User-Defined” is selected, battery charge voltage and low DC cut-off voltage can be set up in Battery type program 26, 27 and 29.
  • Page 20 WECO battery If selected, programs of 02, 12, 26, 27 and 29 will be auto-configured per battery supplier recommended. No need for further adjustment. Soltaro battery If selected, programs of 02, 26, 27 and 29 will be automatically set up. No need for further setting. Battery Type LIb-protocol compatible Select “...
  • Page 21 110V 120V (default) Output voltage 127V 30A (default) Maximum utility charging current Note: If setting value in program 02 is smaller than that in program in 11, the inverter will apply charging current from program 02 for utility charger.
  • Page 22 46V (default) Setting voltage point back to utility source when selecting “SBU” (SBU priority) in program 01. Battery fully charged Setting voltage point back to battery mode when selecting “SBU” (SBU priority) in program 01. 54V (default)
  • Page 23 Setting voltage point back to battery mode when selecting “SBU” (SBU priority) in program 01. If this inverter/charger is working in Line, Standby or Fault mode, charger source can be programmed as below: Solar first Solar energy will charge battery as first priority.
  • Page 24 Alarm on (default) Alarm off Alarm control Return to default display If selected, no matter how users screen (default) switch display screen, it will automatically return to default display screen (Input voltage /output voltage) after no button is pressed for 1 minute. Auto return to default display screen Stay at latest screen...
  • Page 25 Record enable (default) Record disable Record Fault code 24V model default: 28.2V 48V model default: 56.4V Bulk charging voltage (C.V voltage) If self-defined is selected in program 5, this program can be set up. Setting range is from 25.0V to 31.0V for 24V model and 48.0V to 62.0V for 48V model.
  • Page 26 When the inverter is operation in split phase application, set up inverter to be operated in specific phase. L1 for split phase: L2 for split phase: (120° phase difference) AC output mode *This setting is only available when the inverter is in standby mode (Switch off).
  • Page 27 120min (default) Setting range is from 5min to 900 min. Increment of each click is 5 min. Battery equalized timeout 30days (default) Setting range is from 0 to 90 days. Increment of each click is 1 day Equalization interval Enable Disable (default) Equalization activated immediately...
  • Page 28 High Normal (default) Lighting speed of RGB LED High Scrolling Breathing RGB LED effects Solid on (Default) C01: (Default) C02: Color combination of RGB Violet-White-Sky blue White-Yellow-Green   LED to show energy source Pink-Honey Royal blue-Lime yellow   and battery charge/discharge status: ...
  • Page 29 Enable (default) Disable On/Off control for 12V DC output Reset Not reset (Default) Erase all data log 3 minutes 5 minutes 10 minutes (default) 20 minutes Data log recorded interval *The maximum data log number is 1440. If it’s over 1440, it will re-write the first log.
  • Page 30 For day setting, the range is from 1 to 31. Time setting– Day For month setting, the range is from 1 to 12. Time setting– Month For year setting, the range is from 17 to 99. Time setting – Year Function Setting There are three function keys on the display panel to implement special functions such as USB OTG, Timer setting for output source priority and timer setting for charger source priority.
  • Page 31 By pressing “ ” button to export data log from the inverter to USB disk. If the selected function is ready, LCD will display “ ”. Press “ ” button to confirm the selection again. Press “ ” button to select “Yes”, LED 1 will flash once every second ...
  • Page 32 Press “ ” button to set up SBU Priority Timer. Press “ ” button to select staring time. Press “ ” or “ ” button to adjust values and press “ ” to confirm. Press “ ” button to select end time. Press “ ”...

  • Page 33: Lcd Display

    LCD Display The LCD display information will be switched in turn by pressing the “UP” or “DOWN” button. The selectable information is switched as the following table in order. Selectable information LCD display Input Voltage=230V, output voltage=230V Input voltage/Output voltage (Default Display Screen) Input frequency=50Hz Input frequency...
  • Page 34 PV1 current = 2.5A (dual input model) PV2 current = 2.5A (dual input model) PV power = 500W PV1 power = 500W (dual input model) PV power PV2 power = 500W (dual input model)
  • Page 35 AC and PV charging current=50A PV charging current=50A Charging current AC charging current=50A AC and PV charging power=500W PV charging power=500W Charging power AC charging power=500W Battery voltage=25.5V, output voltage=230V Battery voltage and output voltage...
  • Page 36 Output frequency=50Hz Output frequency Load percent=70% Load percentage When connected load is lower than 1kVA, load in VA will present xxxVA like below chart. Load in VA When load is larger than 1kVA (≧1KVA), load in VA will present x.xkVA like below chart. When load is lower than 1kW, load in W will present xxxW like below chart.
  • Page 37 This PV Today energy = 3.88kWh, Load Today energy= 9.88kWh. PV energy generated today and Load output energy today This PV month energy = 388kWh, Load month energy= 988kWh. PV energy generated this month and Load output energy this month. This PV year energy = 3.88MWh, Load year energy = 9.88MWh.

  • Page 38: Operating Mode Description

    Main CPU version 00014.04. Main CPU version checking. Secondary CPU version 00012.03. Secondary CPU version checking. Secondary Wi-Fi version 00000.24. Secondary Wi-Fi version checking. Operating Mode Description Operation mode Description LCD display Charging by utility and PV energy. Charging by utility. Standby mode Note: No output is supplied by the...
  • Page 39 Operation mode Description LCD display Charging by utility and PV energy. Charging by utility. Fault mode Note: *Fault mode: Errors are PV energy and utility can caused by inside circuit error charge batteries. or external reasons such as over temperature, output Charging by PV energy.
  • Page 40 Operation mode Description LCD display If either “SUB” (solar first) or “SBU” is selected as output source priority and battery is not connected, solar energy and the utility will provide the loads. The unit will provide output power from the mains. It will Line Mode also charge the battery at line mode.

  • Page 41: Faults Reference Code

    Faults Reference Code Fault Code Fault Event Icon on Fan is locked when inverter is off. Over temperature Battery voltage is too high Battery voltage is too low Output short circuited. Output voltage is too high. Overload time out Bus voltage is too high Bus soft start failed PV over current PV over voltage...

  • Page 42: Warning Indicator

    Warning Indicator Warning Warning Event Audible Alarm Icon flashing Code Beep three times every Fan is locked when inverter is on. second Over temperature None Battery is over-charged Beep once every second Low battery Beep once every second Overload Beep once every 0.5 second Output power derating Beep twice every 3 seconds PV energy is low.

  • Page 43: Battery Equalization

    BATTERY EQUALIZATION Equalization function is added into charge controller. It reverses the buildup of negative chemical effects like stratification, a condition where acid concentration is greater at the bottom of the battery than at the top. Equalization also helps to remove sulfate crystals that might have built up on the plates. If left unchecked, this condition, called sulfation, will reduce the overall capacity of the battery.

  • Page 44: Specifications

    SPECIFICATIONS Table 1 Line Mode Specifications MODEL LV 6548 Input Voltage Waveform Sinusoidal (utility or generator) Nominal Input Voltage 120Vac 90Vac± 7V (UPS) Low Loss Voltage 80Vac± 7V (Appliances) 100Vac± 7V (UPS); Low Loss Return Voltage 90Vac± 7V (Appliances) High Loss Voltage 140Vac±...
  • Page 45 Table 2 Inverter Mode Specifications MODEL LV 6548 Rated Output Power 6500W Output Voltage Waveform Pure Sine Wave Output Voltage Regulation 120Vac± 5% Output Frequency 60Hz or 50Hz Peak Efficiency Overload Protection 100ms@≥205% load;5s@≥150% load; 10s@110%~150% load Surge Capacity 2* rated power for 5 seconds...
  • Page 46 Table 3 Charge Mode Specifications Utility Charging Mode MODEL LV 6548 Charging Current (UPS) 120A @ Nominal Input Voltage Flooded 58.4Vdc Battery Bulk Charging Voltage AGM / Gel 56.4Vdc Battery Floating Charging Voltage 54Vdc Overcharge Protection 66Vdc Charging Algorithm 3-Step...
  • Page 47 Table 4 General Specifications MODEL LV 6548 Safety Certification Operating Temperature Range -10°C to 40°C Storage temperature -15°C~ 60°C Humidity 5% to 95% Relative Humidity (Non-condensing) Dimension (D*W*H), mm 147.4x 432.5 x 553.6 Net Weight, kg 18.4 Table 5 Parallel Specifications (Parallel model only)

  • Page 48: Trouble Shooting

    TROUBLE SHOOTING Problem LCD/LED/Buzzer Explanation / Possible cause What to do Unit shuts down LCD/LEDs and buzzer automatically will be active for 3 The battery voltage is too low 1. Re-charge battery. during startup seconds and then (<1.91V/Cell) 2. Replace battery. process.

  • Page 49: Appendix I: Parallel Function (Only For 7.2Kw Mode)

    Torque value Cable mm D (mm) L (mm) LV 6548 1*2/0AWG 5 Nm WARNING: Be sure the length of all battery cables is the same. Otherwise, there will be voltage difference between inverter and battery to cause parallel inverters not working.
  • Page 50 Recommended breaker specification of battery for each inverter: Model 1 unit* LV 6548 250A/70VDC *If you want to use only one breaker at the battery side for the whole system, the rating of the breaker should be X times current of 1 unit. “X” indicates the number of inverters connected in parallel.
  • Page 51 Three inverters in parallel: Power Connection Communication Connection Four inverters in parallel: Power Connection Communication Connection...
  • Page 52 Five inverters in parallel: Power Connection Communication Connection Six inverters in parallel: Power Connection Communication Connection...
  • Page 53 4-2. Support 3-phase equipment Two inverters in each phase: Power Connection Communication Connection Four inverters in one phase and one inverter for the other two phases: Power Connection Communication Connection...
  • Page 54 Three inverters in one phase, two inverters in second phase and one inverter for the third phase: Power Connection Communication Connection Three inverters in one phase and only one inverter for the remaining two phases: Power Connection Communication Connection...
  • Page 55 Two inverters in two phases and only one inverter for the remaining phase: Power Connection Communication Connection Two inverters in one phase and only one inverter for the remaining phases: Power Connection Communication Connection...
  • Page 56 One inverter in each phase: Power Connection Communication Connection WARNING: Do not connect the current sharing cable between the inverters which are in different phases. Otherwise, it may damage the inverters. 4-3. Support split-phase equipment Three inverters in each phase: Communication Connection...
  • Page 57 Two inverters in each phase: Power Connection Communication Connection One inverter in each phase: Power Connection Communication Connection 5. PV Connection Please refer to user manual of single unit for PV Connection. CAUTION: Each inverter should connect to PV modules separately.
  • Page 58 6. LCD Setting and Display Setting Program: Program Description Selectable option Single When the unit is operated alone, please select “SIG” in program 28. When the units are used in parallel for Parallel single phase application, please select “PAL” in program 28. Please refer to 5-1 for detailed information.
  • Page 59 Fault code display: Fault Code Fault Event Icon on Power feedback protection Firmware version inconsistent Current sharing fault CAN fault Host loss Synchronization loss Battery voltage detected different AC input voltage and frequency detected different AC output current unbalance AC output mode setting is different Code Reference: Code Description...
  • Page 60 automatically restart. If detecting AC connection, they will work normally. LCD display in Master unit LCD display in Slave unit Step 5: If there is no more fault alarm, the parallel system is completely installed. Step 6: Please switch on all breakers of Line wires in load side. This system will start to provide power to the load.
  • Page 61 Support split-phase equipment Step 1: Check the following requirements before commissioning: Correct wire connection  Ensure all breakers in Line wires of load side are open and each Neutral wires of each unit are connected  together. Step 2: Turn on all units and configure LCD program 28 as 2P1 and 2P2 sequentially. And then shut down all units.
  • Page 62 8. Trouble shooting Situation Solution Fault Fault Event Description Code Restart the inverter. Check if L/N cables are not connected reversely in all inverters. For parallel system in single phase, make sure the sharing are Current feedback into connected in all inverters. the inverter is For supporting three-phase system, make sure the sharing cables are detected.

  • Page 63: Appendix Ii: Bms Communication Installation

    Appendix II: BMS Communication Installation 1. Introduction If connecting to lithium battery, it is recommended to purchase a custom-made RJ45 communication cable. Please check with your dealer or integrator for details. This custom-made RJ45 communication cable delivers information and signal between lithium battery and the inverter.
  • Page 64 3. Installation and Operation After configuration, please install LCD panel with inverter and Lithium battery with the following steps. Step 1. Use custom-made RJ45 cable to connect inverter and Lithium battery. Note for parallel system: 1. Only support common battery installation. 2.
  • Page 65 Step 5. Be sure to select battery type as “PYL” in LCD program 5. If communication between the inverter and battery is successful, the battery icon on LCD display will flash. Generally speaking, it will take longer than 1 minute to establish communication. Active Function This function is to activate lithium battery automatically while commissioning.
  • Page 66 Step 3. Turn on the inverter. Step 4. Be sure to select battery type as “WEC” in LCD program 5. If communication between the inverter and battery is successful, the battery icon on LCD display will “flash”. Generally speaking, it will take longer than 1 minute to establish communication. SOLTARO Step 1.
  • Page 67 Step 3. Turn on the inverter. Step 4. Be sure to select battery type as “SOL” in LCD program 5. If communication between the inverter and battery is successful, the battery icon on LCD display will “flash”. Generally speaking, it will take longer than 1 minute to establish communication. LCD Display Information Press “...
  • Page 68 5. Code Reference Related information code will be displayed on LCD screen. Please check inverter LCD screen for the operation. Code Description Action If battery status is not allowed to charge and discharge after the communication between the inverter and battery is successful, it will show code 60 to stop charging and discharging battery.

  • Page 69: Appendix Iii: The Wi-Fi Operation Guide In Remote Panel

    Appendix III: The Wi-Fi Operation Guide in Remote Panel 1. Introduction Wi-Fi module can enable wireless communication between off-grid inverters and monitoring platform. Users have complete and remote monitoring and controlling experience for inverters when combining Wi-Fi module with WatchPower APP, available for both iOS and Android based device. All data loggers and parameters are saved in iCloud.
  • Page 70 Then, a “Registration success” window will pop up. Tap “Go now” to continue setting local Wi-Fi network connection. Step 2: Local Wi-Fi Module Configuration Now, you are in “Wi-Fi Config” page. There are detailed setup procedure listed in “How to connect?” section and you may follow it to connect Wi-Fi.
  • Page 71 Step 3: Wi-Fi Network settings icon to select your local Wi-Fi router name (to access the internet) and enter password. Step 4: Tap “Confirm” to complete the Wi-Fi configuration between the Wi-Fi module and the Internet. If the connection fails, please repeat Step 2 and 3. Diagnose Function If the module is not monitoring properly, please tap “...
  • Page 72 2-3. Login and APP Main Function After finishing the registration and local Wi-Fi configuration, enter registered name and password to login. Note: Tick “Remember Me” for your login convenience afterwards. Overview After login is successfully, you can access “Overview” page to have overview of your monitoring devices, including overall operation situation and Energy information for Current power and Today power as below diagram.
  • Page 73 Devices Tap the icon (located on the bottom) to enter Device List page. You can review all devices here by adding or deleting Wi-Fi Module in this page. Add device Delete device icon on the top right corner and enter part number by scanning bar code to add Wi-Fi module. This part number is printed on the Wi-Fi module’s surface, or manually enter it.
  • Page 74 2-4. Device List In Device List page, you can pull down to refresh the device information and then tap any device you want to check up for its real-time status and related information as well as to change parameter settings. Please refer to the parameter setting list.
  • Page 75 【Battery Mode】 Inverter will power the load from the batter with or without PV charging. Only PV source can charge battery. Device Alarm and Name Modification In this page, tap the icon on the top right corner to enter the device alarm page. Then, you can review alarm history and detailed information.
  • Page 76 【Rated Information】displays information of Nominal AC voltage, Nominal AC current, Rated battery voltage, Nominal output voltage, Nominal output frequency, Nominal output current, Nominal output apparent power and Nominal output active power. Please slide up to see more rated information. 【History】displays the record of unit information and setting timely. 【Wi-Fi Module Information】displays of Wi-Fi Module PN, status and firmware version.
  • Page 77 discharge. Charger source To configure charger source priority. priority: Max. charging current It’s to set up battery charging parameters. The selectable values in Max. AC charging different inverter model may vary. current: Please see product manual for the details. Float charging voltage It’s to set up battery charging parameters.

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